Flush door latch assembly



FIG. 1 is a right, front perspective view of our design for a flush door latch assembly;

FIG. 2 is a top plan view thereof, the bottom being a mirror image;

FIG. 3 is a front elevation view thereof, the rear being unornamented; and,

FIG. 4 is a right side elevation view thereof, the left side being a mirror image.

The broken line showing in FIGS. 1, 2 and 4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a flush door latch assembly, as shown and described. 